THE BEGINNINGS OF THE GOTHIC REVIVAL at Blackheath of 1717-18 is castellated and has a fortified-looking round tower. He also introduced castellated structures into some of the grounds which he furnished or laid out. His reason for doing so was that mediaeval forms suggested strength, and he always wanted to be masculine in his designs. Hence thick round towers and battle- ments occur even in in his country houses which are otherwise in the current style. However, it was not only their aesthetic qualities which tempted him in mediaeval casdes. He saw more in them. Not that he actually built sham ruins as the kter i8th century did, but he defended the preservation of genuine ruins when he found them, because they "move lively and pleasing reflections ... on the persons who have inhabited them (and) on the remarkable things which have been transacted in them", and because "with yews and hollies in a wild thicket" they make "one of the most agreeable objects that the best of landscape painters can invent". Vanbrugh's austere version of medievalism found no successors, but the two passages quoted from his memorandum of 1709 on Blenheim form the foundation of Romantic Revivalism. As will have been noticed Vanbrugh uses two arguments: the associational and the picturesque. Both were developed by theorists of the i8th century. A building is clothed in the garb of a special style, because of the meditations which that style will rouse. And a building is conceived in conjunction with the surrounding nature, because the virtuosi had discovered on the Grand Tour amid the ruins of Roman architecture in and around Rome, the truth and the picturesque- ness of the heroic and idyllic landscapes-of Claude Lorraine, Poussin, Dughet and Salvator Rosa. These were bought freely by English collectors and helped to form the taste of artists and gardeners, amateur and professional. Lorraine may have been admired by Pope and Kent (who after all was a painter before he became an architect), but the gardens of Twickenham and Chiswick had nothing of the serene calm of a Lorraine landscape. The Rococo had to die, before this kind of beauty could be reproduced. The Leasowes, the garden which William Shenstone the poet had laid out for himself about 1745, was apparently amongst the first to replace the "twisting and twirling" of the earlier style by a gentler flow of curves which, together with the many memorial seats and temples which he erected, helped to rouse feelings of pleasant meditation. The great name in the history of mid-i8th-century gardening is Lancelot 189